Detangling incubator: virtual nets, tunnels, resource labels, oh my

- virtual networking moved to /apps/virtual; with CLI & REST API
- tunnels and labels moved to /apps/tunnel; with CLI & REST API; UI disabled for now
- protobuf/models moved to /core/protobuf/models
- defunct grpc/rpc registry stuff left under /graveyard
- compile dependencies on /incubator moved to respective modules for compilation
- run-time dependencies will need to be re-tested for dependent apps

- /graveyard will be removed in not-too-distant future

Change-Id: I0a0b995c635487edcf95a352f50dd162186b0b39
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelApplyCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelApplyCommand.java
new file mode 100644
index 0000000..c5d9e8e
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelApplyCommand.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import java.util.Collection;
+import java.util.Iterator;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.incubator.net.resource.label.DefaultLabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResourceService;
+
+@Service
+@Command(scope = "onos", name = "global-label-apply",
+      description = "Apply global labels from global resource pool")
+public class GlobalLabelApplyCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "applyNum",
+            description = "Applying number means how many labels applications want to use.",
+            required = true, multiValued = false)
+    String applyNum = null;
+
+    private static final String FMT = "deviceid=%s, labelresourceid=%s";
+
+    @Override
+    protected void doExecute() {
+        LabelResourceService lrs = get(LabelResourceService.class);
+        Collection<LabelResource> result =
+                lrs.applyFromGlobalPool(Long.parseLong(applyNum));
+        if (!result.isEmpty()) {
+            for (Iterator<LabelResource> iterator = result.iterator(); iterator
+                    .hasNext();) {
+                DefaultLabelResource defaultLabelResource = (DefaultLabelResource) iterator
+                        .next();
+                print(FMT, defaultLabelResource.deviceId().toString(),
+                      defaultLabelResource.labelResourceId().toString());
+            }
+        }
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelCommand.java
new file mode 100644
index 0000000..d93bf6f
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelCommand.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.incubator.net.resource.label.LabelResourcePool;
+import org.onosproject.incubator.net.resource.label.LabelResourceService;
+
+@Service
+@Command(scope = "onos", name = "global-label-pool",
+      description = "Gets global label resource pool information.")
+public class GlobalLabelCommand extends AbstractShellCommand {
+    private static final String FMT = "deviceid=%s, beginLabel=%s,"
+            + "endLabel=%s, totalNum=%s, usedNum=%s, currentUsedMaxLabelId=%s,"
+            + "releaseLabelIds=%s";
+
+    @Override
+    protected void doExecute() {
+        LabelResourceService lrs = get(LabelResourceService.class);
+        LabelResourcePool pool = lrs.getGlobalLabelResourcePool();
+        if (pool != null) {
+            print(FMT, pool.deviceId().toString(), pool.beginLabel(),
+                  pool.endLabel(), pool.totalNum(), pool.usedNum(),
+                  pool.currentUsedMaxLabelId(), pool.releaseLabelId()
+                          .toString());
+        }
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelPoolCreateCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelPoolCreateCommand.java
new file mode 100644
index 0000000..605f7c2
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelPoolCreateCommand.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.incubator.net.resource.label.LabelResourceAdminService;
+import org.onosproject.incubator.net.resource.label.LabelResourceId;
+
+/**
+ * create label resource pool by specific device id.
+ */
+@Service
+@Command(scope = "onos", name = "global-label-pool-create",
+description = "Creates global label resource pool.")
+public class GlobalLabelPoolCreateCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "beginLabel",
+            description = "The first label of global label resource pool.",
+            required = true, multiValued = false)
+    String beginLabel = null;
+    @Argument(index = 1, name = "endLabel",
+            description = "The last label of global label resource pool.",
+            required = true, multiValued = false)
+    String endLabel = null;
+
+    @Override
+    protected void doExecute() {
+        LabelResourceAdminService lrs = get(LabelResourceAdminService.class);
+        lrs.createGlobalPool(LabelResourceId.labelResourceId(Long
+                .parseLong(beginLabel)), LabelResourceId.labelResourceId(Long
+                .parseLong(endLabel)));
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelPoolDestroyCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelPoolDestroyCommand.java
new file mode 100644
index 0000000..09c70375
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelPoolDestroyCommand.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.incubator.net.resource.label.LabelResourceAdminService;
+
+@Service
+@Command(scope = "onos", name = "global-label-pool-destroy",
+description = "Destroys global label resource pool")
+public class GlobalLabelPoolDestroyCommand extends AbstractShellCommand {
+    @Override
+    protected void doExecute() {
+        LabelResourceAdminService lrs = get(LabelResourceAdminService.class);
+        lrs.destroyGlobalPool();
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelReleaseCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelReleaseCommand.java
new file mode 100644
index 0000000..3a692be
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/GlobalLabelReleaseCommand.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.incubator.net.resource.label.LabelResourceId;
+import org.onosproject.incubator.net.resource.label.LabelResourceService;
+
+@Service
+@Command(scope = "onos", name = "global-label-release",
+description = "Releases labels to global label resource pool.")
+public class GlobalLabelReleaseCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "releaseLabelIds",
+            description = "Represents for the label ids that are released. They are splited by dot symbol",
+            required = true, multiValued = false)
+    String releaseLabelIds = null;
+
+    @Override
+    protected void doExecute() {
+        LabelResourceService lrs = get(LabelResourceService.class);
+        Set<LabelResourceId> release = new HashSet<LabelResourceId>();
+        String[] labelIds = releaseLabelIds.split(",");
+        LabelResourceId resource = null;
+        for (int i = 0; i < labelIds.length; i++) {
+            resource = LabelResourceId.labelResourceId(Long.parseLong(labelIds[i]));
+            release.add(resource);
+        }
+        lrs.releaseToGlobalPool(release);
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelApplyCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelApplyCommand.java
new file mode 100644
index 0000000..c7634fa
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelApplyCommand.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import java.util.Collection;
+import java.util.Iterator;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.DeviceId;
+import org.onosproject.incubator.net.resource.label.DefaultLabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResourceService;
+
+@Service
+@Command(scope = "onos", name = "label-apply",
+      description = "Apply label resource from device pool by specific device id")
+public class LabelApplyCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "deviceId",
+            description = "Device identity",
+            required = true, multiValued = false)
+    String deviceId = null;
+    @Argument(index = 1, name = "applyNum",
+            description = "Applying number means how many labels applications want to use.",
+            required = true, multiValued = false)
+    String applyNum = null;
+
+    private static final String FMT = "deviceid=%s, labelresourceid=%s";
+
+    @Override
+    protected void doExecute() {
+        LabelResourceService lrs = get(LabelResourceService.class);
+        Collection<LabelResource> result = lrs.applyFromDevicePool(DeviceId
+                .deviceId(deviceId), Long.parseLong(applyNum));
+        if (!result.isEmpty()) {
+            for (Iterator<LabelResource> iterator = result.iterator(); iterator
+                    .hasNext();) {
+                DefaultLabelResource defaultLabelResource = (DefaultLabelResource) iterator
+                        .next();
+                print(FMT, defaultLabelResource.deviceId().toString(),
+                      defaultLabelResource.labelResourceId().toString());
+            }
+        }
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelPoolCreateCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelPoolCreateCommand.java
new file mode 100644
index 0000000..775c269
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelPoolCreateCommand.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.DeviceId;
+import org.onosproject.incubator.net.resource.label.LabelResourceAdminService;
+import org.onosproject.incubator.net.resource.label.LabelResourceId;
+
+/**
+ * create label resource pool by specific device id.
+ */
+@Service
+@Command(scope = "onos", name = "label-pool-create",
+     description = "Creates label resource pool by a specific device id")
+public class LabelPoolCreateCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "deviceId", description = "Device identity", required = true, multiValued = false)
+    String deviceId = null;
+    @Argument(index = 1, name = "beginLabel",
+            description = "The first label of global label resource pool.", required = true, multiValued = false)
+    String beginLabel = null;
+    @Argument(index = 2, name = "endLabel",
+            description = "The last label of global label resource pool.", required = true, multiValued = false)
+    String endLabel = null;
+
+    @Override
+    protected void doExecute() {
+        LabelResourceAdminService lrs = get(LabelResourceAdminService.class);
+        lrs.createDevicePool(DeviceId.deviceId(deviceId), LabelResourceId
+                .labelResourceId(Long.parseLong(beginLabel)), LabelResourceId
+                .labelResourceId(Long.parseLong(endLabel)));
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelPoolDestroyCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelPoolDestroyCommand.java
new file mode 100644
index 0000000..c875cd8
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelPoolDestroyCommand.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.DeviceId;
+import org.onosproject.incubator.net.resource.label.LabelResourceAdminService;
+
+@Service
+@Command(scope = "onos", name = "label-pool-destroy",
+    description = "Destroys label resource pool by a specific device id")
+public class LabelPoolDestroyCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "deviceId", description = "Device identity", required = true, multiValued = false)
+    String deviceId = null;
+
+    @Override
+    protected void doExecute() {
+        LabelResourceAdminService lrs = get(LabelResourceAdminService.class);
+        lrs.destroyDevicePool(DeviceId.deviceId(deviceId));
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelReleaseCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelReleaseCommand.java
new file mode 100644
index 0000000..c511642
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelReleaseCommand.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.DeviceId;
+import org.onosproject.incubator.net.resource.label.DefaultLabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResourceId;
+import org.onosproject.incubator.net.resource.label.LabelResourceService;
+
+import com.google.common.collect.ArrayListMultimap;
+import com.google.common.collect.Multimap;
+
+@Service
+@Command(scope = "onos", name = "label-release",
+description = "Releases label ids to label resource pool by a specific device id")
+public class LabelReleaseCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "deviceId",
+            description = "Device identity",
+            required = true, multiValued = false)
+    String deviceId = null;
+    @Argument(index = 1, name = "releaseLabelIds",
+            description = "Represents for the label ids that are released. They are splited by dot symbol",
+            required = true, multiValued = false)
+    String releaseLabelIds = null;
+
+    @Override
+    protected void doExecute() {
+        LabelResourceService lrs = get(LabelResourceService.class);
+        Multimap<DeviceId, LabelResource> map = ArrayListMultimap
+                .create();
+        String[] labelIds = releaseLabelIds.split(",");
+        DefaultLabelResource resource = null;
+        for (int i = 0; i < labelIds.length; i++) {
+            resource = new DefaultLabelResource(
+                                                DeviceId.deviceId(deviceId),
+                                                LabelResourceId.labelResourceId(Long
+                                                        .parseLong(labelIds[i])));
+            map.put(DeviceId.deviceId(deviceId), resource);
+        }
+        lrs.releaseToDevicePool(map);
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelResourceCommand.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelResourceCommand.java
new file mode 100644
index 0000000..84c8f65
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/LabelResourceCommand.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.DeviceId;
+import org.onosproject.incubator.net.resource.label.LabelResourcePool;
+import org.onosproject.incubator.net.resource.label.LabelResourceService;
+
+@Service
+@Command(scope = "onos", name = "label-pool",
+      description = "Gets label resource pool information by a specific device id")
+public class LabelResourceCommand extends AbstractShellCommand {
+    @Argument(index = 0, name = "deviceId",
+            description = "Device identity", required = true, multiValued = false)
+    String deviceId = null;
+    private static final String FMT = "deviceid=%s, beginLabel=%s,"
+            + "endLabel=%s, totalNum=%s, usedNum=%s, currentUsedMaxLabelId=%s,"
+            + "releaseLabelIds=%s";
+
+    @Override
+    protected void doExecute() {
+        LabelResourceService lrs = get(LabelResourceService.class);
+        LabelResourcePool pool = lrs.getDeviceLabelResourcePool(DeviceId
+                .deviceId(deviceId));
+        if (pool != null) {
+            print(FMT, pool.deviceId().toString(), pool.beginLabel(),
+                  pool.endLabel(), pool.totalNum(), pool.usedNum(),
+                  pool.currentUsedMaxLabelId(), pool.releaseLabelId()
+                          .toString());
+        } else {
+            print(FMT, deviceId, null, null, null, null, null, null);
+        }
+    }
+
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/package-info.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/package-info.java
new file mode 100644
index 0000000..0e8608f
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/cli/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * CLIs for the resource label subsystem.
+ */
+package org.onosproject.incubator.net.resource.label.cli;
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/impl/LabelResourceManager.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/impl/LabelResourceManager.java
new file mode 100644
index 0000000..ad9a133
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/impl/LabelResourceManager.java
@@ -0,0 +1,233 @@
+/*
+ * Copyright 2015-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.impl;
+
+import com.google.common.collect.Multimap;
+import org.onosproject.incubator.net.resource.label.LabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResourceAdminService;
+import org.onosproject.incubator.net.resource.label.LabelResourceDelegate;
+import org.onosproject.incubator.net.resource.label.LabelResourceEvent;
+import org.onosproject.incubator.net.resource.label.LabelResourceId;
+import org.onosproject.incubator.net.resource.label.LabelResourceListener;
+import org.onosproject.incubator.net.resource.label.LabelResourcePool;
+import org.onosproject.incubator.net.resource.label.LabelResourceProvider;
+import org.onosproject.incubator.net.resource.label.LabelResourceProviderRegistry;
+import org.onosproject.incubator.net.resource.label.LabelResourceProviderService;
+import org.onosproject.incubator.net.resource.label.LabelResourceService;
+import org.onosproject.incubator.net.resource.label.LabelResourceStore;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.device.DeviceEvent;
+import org.onosproject.net.device.DeviceEvent.Type;
+import org.onosproject.net.device.DeviceListener;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.net.provider.AbstractListenerProviderRegistry;
+import org.onosproject.net.provider.AbstractProviderService;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
+import org.slf4j.Logger;
+
+import java.util.Collection;
+import java.util.Set;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * provides implementation of the label resource NB &amp; SB APIs.
+ *
+ */
+@Component(immediate = true,
+           service = {LabelResourceService.class, LabelResourceAdminService.class, LabelResourceProviderRegistry.class})
+public class LabelResourceManager
+        extends AbstractListenerProviderRegistry<LabelResourceEvent, LabelResourceListener,
+                                                 LabelResourceProvider, LabelResourceProviderService>
+        implements LabelResourceService, LabelResourceAdminService, LabelResourceProviderRegistry {
+    private final Logger log = getLogger(getClass());
+    private final LabelResourceDelegate delegate = new InternalLabelResourceDelegate();
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected LabelResourceStore store;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected DeviceService deviceService;
+
+    private DeviceListener deviceListener = new InternalDeviceListener();
+
+    @Activate
+    public void activate() {
+        store.setDelegate(delegate);
+        eventDispatcher.addSink(LabelResourceEvent.class, listenerRegistry);
+        deviceService.addListener(deviceListener);
+        log.info("Started");
+
+    }
+
+    @Deactivate
+    public void deactivate() {
+        deviceService.removeListener(deviceListener);
+        store.unsetDelegate(delegate);
+        eventDispatcher.removeSink(LabelResourceEvent.class);
+        log.info("Stopped");
+    }
+
+    @Override
+    public boolean createDevicePool(DeviceId deviceId,
+                                    LabelResourceId beginLabel,
+                                    LabelResourceId endLabel) {
+        checkNotNull(deviceId, "deviceId is not null");
+        checkNotNull(beginLabel, "beginLabel is not null");
+        checkNotNull(endLabel, "endLabel is not null");
+        checkArgument(beginLabel.labelId() >= 0 || endLabel.labelId() >= 0,
+                      "The value of beginLabel and the value of endLabel must be both positive number.");
+        checkArgument(beginLabel.labelId() < endLabel.labelId(),
+                      "The value of endLabel must be greater than the value of beginLabel.");
+        return store.createDevicePool(deviceId, beginLabel, endLabel);
+    }
+
+    @Override
+    public boolean createGlobalPool(LabelResourceId beginLabel,
+                                    LabelResourceId endLabel) {
+        checkNotNull(beginLabel, "beginLabel is not null");
+        checkNotNull(endLabel, "endLabel is not null");
+        checkArgument(beginLabel.labelId() >= 0 && endLabel.labelId() >= 0,
+                      "The value of beginLabel and the value of endLabel must be both positive number.");
+        checkArgument(beginLabel.labelId() < endLabel.labelId(),
+                      "The value of endLabel must be greater than the value of beginLabel.");
+        return store.createGlobalPool(beginLabel, endLabel);
+    }
+
+    @Override
+    public boolean destroyDevicePool(DeviceId deviceId) {
+        checkNotNull(deviceId, "deviceId is not null");
+        return store.destroyDevicePool(deviceId);
+    }
+
+    @Override
+    public boolean destroyGlobalPool() {
+        return store.destroyGlobalPool();
+    }
+
+    @Override
+    public Collection<LabelResource> applyFromDevicePool(DeviceId deviceId,
+                                                         long applyNum) {
+        checkNotNull(deviceId, "deviceId is not null");
+        return store.applyFromDevicePool(deviceId, applyNum);
+    }
+
+    @Override
+    public Collection<LabelResource> applyFromGlobalPool(long applyNum) {
+        return store.applyFromGlobalPool(applyNum);
+    }
+
+    @Override
+    public boolean releaseToDevicePool(Multimap<DeviceId, LabelResource> release) {
+        checkNotNull(release, "release is not null");
+        return store.releaseToDevicePool(release);
+    }
+
+    @Override
+    public boolean releaseToGlobalPool(Set<LabelResourceId> release) {
+        checkNotNull(release, "release is not null");
+        return store.releaseToGlobalPool(release);
+    }
+
+    @Override
+    public boolean isDevicePoolFull(DeviceId deviceId) {
+        checkNotNull(deviceId, "deviceId is not null");
+        return store.isDevicePoolFull(deviceId);
+    }
+
+    @Override
+    public boolean isGlobalPoolFull() {
+        return store.isGlobalPoolFull();
+    }
+
+    @Override
+    public long getFreeNumOfDevicePool(DeviceId deviceId) {
+        checkNotNull(deviceId, "deviceId is not null");
+        return store.getFreeNumOfDevicePool(deviceId);
+    }
+
+    @Override
+    public long getFreeNumOfGlobalPool() {
+        return store.getFreeNumOfGlobalPool();
+    }
+
+    @Override
+    public LabelResourcePool getDeviceLabelResourcePool(DeviceId deviceId) {
+        checkNotNull(deviceId, "deviceId is not null");
+        return store.getDeviceLabelResourcePool(deviceId);
+    }
+
+    @Override
+    public LabelResourcePool getGlobalLabelResourcePool() {
+        return store.getGlobalLabelResourcePool();
+    }
+
+    private class InternalLabelResourceDelegate implements LabelResourceDelegate {
+        @Override
+        public void notify(LabelResourceEvent event) {
+            post(event);
+        }
+
+    }
+
+    private class InternalDeviceListener implements DeviceListener {
+        @Override
+        public void event(DeviceEvent event) {
+            Device device = event.subject();
+            if (Type.DEVICE_REMOVED.equals(event.type())) {
+                destroyDevicePool(device.id());
+            }
+        }
+    }
+
+    private class InternalLabelResourceProviderService
+            extends AbstractProviderService<LabelResourceProvider>
+            implements LabelResourceProviderService {
+
+        protected InternalLabelResourceProviderService(LabelResourceProvider provider) {
+            super(provider);
+        }
+
+        @Override
+        public void deviceLabelResourcePoolDetected(DeviceId deviceId,
+                                                    LabelResourceId beginLabel,
+                                                    LabelResourceId endLabel) {
+            checkNotNull(deviceId, "deviceId is not null");
+            checkNotNull(beginLabel, "beginLabel is not null");
+            checkNotNull(endLabel, "endLabel is not null");
+            createDevicePool(deviceId, beginLabel, endLabel);
+        }
+
+        @Override
+        public void deviceLabelResourcePoolDestroyed(DeviceId deviceId) {
+            checkNotNull(deviceId, "deviceId is not null");
+            destroyDevicePool(deviceId);
+        }
+
+    }
+
+    @Override
+    protected LabelResourceProviderService createProviderService(LabelResourceProvider provider) {
+        return new InternalLabelResourceProviderService(provider);
+    }
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/impl/package-info.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/impl/package-info.java
new file mode 100644
index 0000000..6df566f
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/impl/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2015-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Implementation of the label resource subsystem.
+ */
+package org.onosproject.incubator.net.resource.label.impl;
\ No newline at end of file
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/DistributedLabelResourceStore.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/DistributedLabelResourceStore.java
new file mode 100644
index 0000000..aa7133a
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/DistributedLabelResourceStore.java
@@ -0,0 +1,530 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.store.impl;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Multimap;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.cluster.ClusterService;
+import org.onosproject.cluster.NodeId;
+import org.onosproject.incubator.net.resource.label.DefaultLabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResource;
+import org.onosproject.incubator.net.resource.label.LabelResourceDelegate;
+import org.onosproject.incubator.net.resource.label.LabelResourceEvent;
+import org.onosproject.incubator.net.resource.label.LabelResourceEvent.Type;
+import org.onosproject.incubator.net.resource.label.LabelResourceId;
+import org.onosproject.incubator.net.resource.label.LabelResourcePool;
+import org.onosproject.incubator.net.resource.label.LabelResourceRequest;
+import org.onosproject.incubator.net.resource.label.LabelResourceStore;
+import org.onosproject.mastership.MastershipService;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.store.AbstractStore;
+import org.onosproject.store.cluster.messaging.ClusterCommunicationService;
+import org.onosproject.store.serializers.KryoNamespaces;
+import org.onosproject.store.service.ConsistentMap;
+import org.onosproject.store.service.Serializer;
+import org.onosproject.store.service.StorageService;
+import org.onosproject.store.service.Versioned;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
+import org.slf4j.Logger;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+import static org.onlab.util.Tools.groupedThreads;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Manages label resources using copycat.
+ */
+@Component(immediate = true, service = LabelResourceStore.class)
+public class DistributedLabelResourceStore
+        extends AbstractStore<LabelResourceEvent, LabelResourceDelegate>
+        implements LabelResourceStore {
+    private final Logger log = getLogger(getClass());
+
+    private static final String POOL_MAP_NAME = "onos-label-resource-pool";
+
+    private static final String GLOBAL_RESOURCE_POOL_DEVICE_ID = "global_resource_pool_device_id";
+
+    private ConsistentMap<DeviceId, LabelResourcePool> resourcePool = null;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected StorageService storageService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected MastershipService mastershipService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected ClusterCommunicationService clusterCommunicator;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected ClusterService clusterService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    protected DeviceService deviceService;
+
+    private ExecutorService messageHandlingExecutor;
+    private static final int MESSAGE_HANDLER_THREAD_POOL_SIZE = 8;
+    private static final long PEER_REQUEST_TIMEOUT_MS = 5000;
+
+    private static final Serializer SERIALIZER = Serializer
+            .using(new KryoNamespace.Builder().register(KryoNamespaces.API)
+                    .register(LabelResourceEvent.class)
+                    .register(LabelResourcePool.class)
+                    .register(LabelResourceRequest.class)
+                    .register(LabelResourceRequest.Type.class)
+                    .register(LabelResourceEvent.Type.class)
+                    .register(DefaultLabelResource.class)
+                    .register(LabelResourceId.class)
+                    .nextId(KryoNamespaces.BEGIN_USER_CUSTOM_ID).build());
+
+    @Activate
+    public void activate() {
+
+        resourcePool = storageService
+                .<DeviceId, LabelResourcePool>consistentMapBuilder()
+                .withName(POOL_MAP_NAME).withSerializer(SERIALIZER).build();
+        messageHandlingExecutor = Executors
+                .newFixedThreadPool(MESSAGE_HANDLER_THREAD_POOL_SIZE,
+                                    groupedThreads("onos/store/flow",
+                                                   "message-handlers",
+                                                   log));
+        clusterCommunicator
+                .addSubscriber(LabelResourceMessageSubjects.LABEL_POOL_CREATED,
+                        SERIALIZER::<LabelResourcePool>decode,
+                        operation -> {
+                            log.trace("received get flow entry request for {}", operation);
+                            return internalCreate(operation);
+                        },
+                        SERIALIZER::<Boolean>encode,
+                        messageHandlingExecutor);
+        clusterCommunicator
+                .addSubscriber(LabelResourceMessageSubjects.LABEL_POOL_DESTROYED,
+                        SERIALIZER::<DeviceId>decode,
+                        deviceId -> {
+                            log.trace("received get flow entry request for {}", deviceId);
+                            return internalDestroy(deviceId);
+                        },
+                        SERIALIZER::<Boolean>encode,
+                        messageHandlingExecutor);
+        clusterCommunicator
+                .addSubscriber(LabelResourceMessageSubjects.LABEL_POOL_APPLY,
+                        SERIALIZER::<LabelResourceRequest>decode,
+                        request -> {
+                            log.trace("received get flow entry request for {}", request);
+                            return internalApply(request);
+
+                        },
+                        SERIALIZER::<Collection<LabelResource>>encode,
+                        messageHandlingExecutor);
+        clusterCommunicator
+                .addSubscriber(LabelResourceMessageSubjects.LABEL_POOL_RELEASE,
+                        SERIALIZER::<LabelResourceRequest>decode,
+                        request -> {
+                            log.trace("received get flow entry request for {}",
+                                    request);
+                            return internalRelease(request);
+                        },
+                        SERIALIZER::<Boolean>encode,
+                        messageHandlingExecutor);
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        clusterCommunicator
+                .removeSubscriber(LabelResourceMessageSubjects.LABEL_POOL_CREATED);
+        clusterCommunicator
+                .removeSubscriber(LabelResourceMessageSubjects.LABEL_POOL_APPLY);
+        clusterCommunicator
+                .removeSubscriber(LabelResourceMessageSubjects.LABEL_POOL_DESTROYED);
+        clusterCommunicator
+                .removeSubscriber(LabelResourceMessageSubjects.LABEL_POOL_RELEASE);
+        messageHandlingExecutor.shutdown();
+        log.info("Stopped");
+    }
+
+    @Override
+    public boolean createDevicePool(DeviceId deviceId,
+                                    LabelResourceId beginLabel,
+                                    LabelResourceId endLabel) {
+        LabelResourcePool pool = new LabelResourcePool(deviceId.toString(),
+                                                       beginLabel.labelId(),
+                                                       endLabel.labelId());
+        return this.create(pool);
+    }
+
+    @Override
+    public boolean createGlobalPool(LabelResourceId beginLabel,
+                                    LabelResourceId endLabel) {
+        LabelResourcePool pool = new LabelResourcePool(GLOBAL_RESOURCE_POOL_DEVICE_ID,
+                                                       beginLabel.labelId(),
+                                                       endLabel.labelId());
+        return this.internalCreate(pool);
+    }
+
+    private boolean create(LabelResourcePool pool) {
+        Device device = deviceService.getDevice(pool.deviceId());
+        if (device == null) {
+            return false;
+        }
+
+        NodeId master = mastershipService.getMasterFor(pool.deviceId());
+
+        if (master == null) {
+            log.warn("Failed to create label resource pool: No master for {}", pool);
+            return false;
+        }
+
+        if (master.equals(clusterService.getLocalNode().id())) {
+            return internalCreate(pool);
+        }
+
+        log.trace("Forwarding getFlowEntries to {}, which is the primary (master) for device {}",
+                  master, pool.deviceId());
+
+        return complete(clusterCommunicator
+                .sendAndReceive(pool,
+                                LabelResourceMessageSubjects.LABEL_POOL_CREATED,
+                                SERIALIZER::encode, SERIALIZER::decode,
+                                master));
+    }
+
+    private boolean internalCreate(LabelResourcePool pool) {
+        Versioned<LabelResourcePool> poolOld = resourcePool
+                .get(pool.deviceId());
+        if (poolOld == null) {
+            resourcePool.put(pool.deviceId(), pool);
+            LabelResourceEvent event = new LabelResourceEvent(Type.POOL_CREATED,
+                                                              pool);
+            notifyDelegate(event);
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public boolean destroyDevicePool(DeviceId deviceId) {
+        Device device = deviceService.getDevice(deviceId);
+        if (device == null) {
+            return false;
+        }
+
+        NodeId master = mastershipService.getMasterFor(deviceId);
+
+        if (master == null) {
+            log.warn("Failed to destroyDevicePool. No master for {}", deviceId);
+            return false;
+        }
+
+        if (master.equals(clusterService.getLocalNode().id())) {
+            return internalDestroy(deviceId);
+        }
+
+        log.trace("Forwarding request to {}, which is the primary (master) for device {}",
+                  master, deviceId);
+
+        return complete(clusterCommunicator
+                .sendAndReceive(deviceId,
+                                LabelResourceMessageSubjects.LABEL_POOL_DESTROYED,
+                                SERIALIZER::encode, SERIALIZER::decode,
+                                master));
+    }
+
+    private boolean internalDestroy(DeviceId deviceId) {
+        Versioned<LabelResourcePool> poolOld = resourcePool.get(deviceId);
+        if (poolOld != null) {
+            resourcePool.remove(deviceId);
+            LabelResourceEvent event = new LabelResourceEvent(Type.POOL_DESTROYED,
+                                                              poolOld.value());
+            notifyDelegate(event);
+        }
+        log.info("success to destroy the label resource pool of device id {}",
+                 deviceId);
+        return true;
+    }
+
+    @Override
+    public Collection<LabelResource> applyFromDevicePool(DeviceId deviceId,
+                                                         long applyNum) {
+        Device device = deviceService.getDevice(deviceId);
+        if (device == null) {
+            return Collections.emptyList();
+        }
+        LabelResourceRequest request = new LabelResourceRequest(deviceId,
+                                                                LabelResourceRequest.Type.APPLY,
+                                                                applyNum, null);
+        NodeId master = mastershipService.getMasterFor(deviceId);
+
+        if (master == null) {
+            log.warn("Failed to applyFromDevicePool: No master for {}", deviceId);
+            return Collections.emptyList();
+        }
+
+        if (master.equals(clusterService.getLocalNode().id())) {
+            return internalApply(request);
+        }
+
+        log.trace("Forwarding request to {}, which is the primary (master) for device {}",
+                  master, deviceId);
+
+        return complete(clusterCommunicator
+                .sendAndReceive(request,
+                                LabelResourceMessageSubjects.LABEL_POOL_APPLY,
+                                SERIALIZER::encode, SERIALIZER::decode,
+                                master));
+    }
+
+    private Collection<LabelResource> internalApply(LabelResourceRequest request) {
+        DeviceId deviceId = request.deviceId();
+        long applyNum = request.applyNum();
+        Versioned<LabelResourcePool> poolOld = resourcePool.get(deviceId);
+        if (poolOld == null) {
+            log.info("label resource pool not allocated for deviceId {}.", deviceId);
+            return Collections.emptyList();
+        }
+        LabelResourcePool pool = poolOld.value();
+        Collection<LabelResource> result = new HashSet<>();
+        long freeNum = this.getFreeNumOfDevicePool(deviceId);
+        if (applyNum > freeNum) {
+            log.info("the free number of the label resource pool of deviceId {} is not enough.");
+            return Collections.emptyList();
+        }
+        Set<LabelResource> releaseLabels = new HashSet<>(pool.releaseLabelId());
+        long tmp = releaseLabels.size() > applyNum ? applyNum : releaseLabels
+                .size();
+        LabelResource resource = null;
+        for (int i = 0; i < tmp; i++) {
+            Iterator<LabelResource> it = releaseLabels.iterator();
+            if (it.hasNext()) {
+                resource = it.next();
+                releaseLabels.remove(resource);
+            }
+            result.add(resource);
+        }
+        for (long j = pool.currentUsedMaxLabelId().labelId(); j < pool
+                .currentUsedMaxLabelId().labelId() + applyNum - tmp; j++) {
+            resource = new DefaultLabelResource(deviceId,
+                                                LabelResourceId
+                                                        .labelResourceId(j));
+            result.add(resource);
+        }
+        long beginLabel = pool.beginLabel().labelId();
+        long endLabel = pool.endLabel().labelId();
+        long totalNum = pool.totalNum();
+        long current = pool.currentUsedMaxLabelId().labelId() + applyNum - tmp;
+        long usedNum = pool.usedNum() + applyNum;
+        ImmutableSet<LabelResource> freeLabel = ImmutableSet
+                .copyOf(releaseLabels);
+        LabelResourcePool newPool = new LabelResourcePool(deviceId.toString(),
+                                                          beginLabel, endLabel,
+                                                          totalNum, usedNum,
+                                                          current, freeLabel);
+        resourcePool.put(deviceId, newPool);
+        log.info("success to apply label resource");
+        return result;
+    }
+
+    @Override
+    public boolean releaseToDevicePool(Multimap<DeviceId, LabelResource> release) {
+        Map<DeviceId, Collection<LabelResource>> maps = release.asMap();
+        Set<DeviceId> deviceIdSet = maps.keySet();
+        LabelResourceRequest request = null;
+        for (Iterator<DeviceId> it = deviceIdSet.iterator(); it.hasNext();) {
+            DeviceId deviceId = it.next();
+            Device device = deviceService.getDevice(deviceId);
+            if (device == null) {
+                continue;
+            }
+            ImmutableSet<LabelResource> collection = ImmutableSet.copyOf(maps
+                    .get(deviceId));
+            request = new LabelResourceRequest(deviceId,
+                                               LabelResourceRequest.Type.RELEASE,
+                                               0, collection);
+            NodeId master = mastershipService.getMasterFor(deviceId);
+
+            if (master == null) {
+                log.warn("Failed to releaseToDevicePool: No master for {}", deviceId);
+                return false;
+            }
+
+            if (master.equals(clusterService.getLocalNode().id())) {
+                return internalRelease(request);
+            }
+
+            log.trace("Forwarding request to {}, which is the primary (master) for device {}",
+                      master, deviceId);
+
+            return complete(clusterCommunicator
+                    .sendAndReceive(request,
+                                    LabelResourceMessageSubjects.LABEL_POOL_RELEASE,
+                                    SERIALIZER::encode, SERIALIZER::decode,
+                                    master));
+        }
+        return false;
+    }
+
+    private boolean internalRelease(LabelResourceRequest request) {
+        DeviceId deviceId = request.deviceId();
+        Collection<LabelResource> release = request.releaseCollection();
+        Versioned<LabelResourcePool> poolOld = resourcePool.get(deviceId);
+        if (poolOld == null) {
+            log.info("the label resource pool of device id {} not allocated");
+            return false;
+        }
+        LabelResourcePool pool = poolOld.value();
+        if (pool == null) {
+            log.info("the label resource pool of device id {} does not exist");
+            return false;
+        }
+        Set<LabelResource> storeSet = new HashSet<>(pool.releaseLabelId());
+        LabelResource labelResource = null;
+        long realReleasedNum = 0;
+        for (Iterator<LabelResource> it = release.iterator(); it.hasNext();) {
+            labelResource = it.next();
+            if (labelResource.labelResourceId().labelId() < pool.beginLabel()
+                    .labelId()
+                    || labelResource.labelResourceId().labelId() > pool
+                            .endLabel().labelId()) {
+                continue;
+            }
+            if (pool.currentUsedMaxLabelId().labelId() > labelResource
+                    .labelResourceId().labelId()
+                    || !storeSet.contains(labelResource)) {
+                storeSet.add(labelResource);
+                realReleasedNum++;
+            }
+        }
+        long beginNum = pool.beginLabel().labelId();
+        long endNum = pool.endLabel().labelId();
+        long totalNum = pool.totalNum();
+        long usedNum = pool.usedNum() - realReleasedNum;
+        long current = pool.currentUsedMaxLabelId().labelId();
+        ImmutableSet<LabelResource> s = ImmutableSet.copyOf(storeSet);
+        LabelResourcePool newPool = new LabelResourcePool(deviceId.toString(),
+                                                          beginNum, endNum,
+                                                          totalNum, usedNum,
+                                                          current, s);
+        resourcePool.put(deviceId, newPool);
+        log.info("success to release label resource");
+        return true;
+    }
+
+    @Override
+    public boolean isDevicePoolFull(DeviceId deviceId) {
+        Versioned<LabelResourcePool> pool = resourcePool.get(deviceId);
+        if (pool == null) {
+            return true;
+        }
+        return pool.value().currentUsedMaxLabelId() == pool.value().endLabel()
+                && pool.value().releaseLabelId().size() == 0 ? true : false;
+    }
+
+    @Override
+    public long getFreeNumOfDevicePool(DeviceId deviceId) {
+        Versioned<LabelResourcePool> pool = resourcePool.get(deviceId);
+        if (pool == null) {
+            return 0;
+        }
+        return pool.value().endLabel().labelId()
+                - pool.value().currentUsedMaxLabelId().labelId()
+                + pool.value().releaseLabelId().size();
+    }
+
+    @Override
+    public LabelResourcePool getDeviceLabelResourcePool(DeviceId deviceId) {
+        Versioned<LabelResourcePool> pool = resourcePool.get(deviceId);
+        return pool == null ? null : pool.value();
+    }
+
+    @Override
+    public boolean destroyGlobalPool() {
+        return this.internalDestroy(DeviceId
+                .deviceId(GLOBAL_RESOURCE_POOL_DEVICE_ID));
+    }
+
+    @Override
+    public Collection<LabelResource> applyFromGlobalPool(long applyNum) {
+        LabelResourceRequest request = new LabelResourceRequest(DeviceId.deviceId(GLOBAL_RESOURCE_POOL_DEVICE_ID),
+                                                                LabelResourceRequest.Type.APPLY,
+                                                                applyNum, null);
+        return this.internalApply(request);
+    }
+
+    @Override
+    public boolean releaseToGlobalPool(Set<LabelResourceId> release) {
+        Set<LabelResource> set = new HashSet<>();
+        DefaultLabelResource resource = null;
+        for (LabelResourceId labelResource : release) {
+            resource = new DefaultLabelResource(DeviceId.deviceId(GLOBAL_RESOURCE_POOL_DEVICE_ID),
+                                                labelResource);
+            set.add(resource);
+        }
+        LabelResourceRequest request = new LabelResourceRequest(DeviceId.deviceId(GLOBAL_RESOURCE_POOL_DEVICE_ID),
+                                                                LabelResourceRequest.Type.RELEASE,
+                                                                0,
+                                                                ImmutableSet.copyOf(set));
+        return this.internalRelease(request);
+    }
+
+    @Override
+    public boolean isGlobalPoolFull() {
+        return this.isDevicePoolFull(DeviceId
+                .deviceId(GLOBAL_RESOURCE_POOL_DEVICE_ID));
+    }
+
+    @Override
+    public long getFreeNumOfGlobalPool() {
+        return this.getFreeNumOfDevicePool(DeviceId
+                .deviceId(GLOBAL_RESOURCE_POOL_DEVICE_ID));
+    }
+
+    @Override
+    public LabelResourcePool getGlobalLabelResourcePool() {
+        return this.getDeviceLabelResourcePool(DeviceId
+                .deviceId(GLOBAL_RESOURCE_POOL_DEVICE_ID));
+    }
+
+    private <T> T complete(Future<T> future) {
+        try {
+            return future.get(PEER_REQUEST_TIMEOUT_MS, TimeUnit.MILLISECONDS);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            log.error("Interrupted while waiting for operation to complete.", e);
+            return null;
+        } catch (TimeoutException | ExecutionException e) {
+            log.error("Failed remote operation", e);
+            return null;
+        }
+    }
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/LabelResourceMessageSubjects.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/LabelResourceMessageSubjects.java
new file mode 100644
index 0000000..cd89233
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/LabelResourceMessageSubjects.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.net.resource.label.store.impl;
+
+import org.onosproject.store.cluster.messaging.MessageSubject;
+
+public final class LabelResourceMessageSubjects {
+
+    private LabelResourceMessageSubjects() {
+    }
+    public static final MessageSubject LABEL_POOL_CREATED
+                        = new MessageSubject("label-resource-pool-created");
+    public static final MessageSubject LABEL_POOL_DESTROYED
+                        = new MessageSubject("label-resource-pool-destroyed");
+    public static final MessageSubject LABEL_POOL_APPLY
+                        = new MessageSubject("label-resource-pool-apply");
+    public static final MessageSubject LABEL_POOL_RELEASE
+                        = new MessageSubject("label-resource-pool-release");
+}
diff --git a/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/package-info.java b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/package-info.java
new file mode 100644
index 0000000..b97e9bc
--- /dev/null
+++ b/apps/tunnel/app/src/main/java/org/onosproject/incubator/net/resource/label/store/impl/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Implementation of the label resource distributed store.
+ */
+package org.onosproject.incubator.net.resource.label.store.impl;
\ No newline at end of file